*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    background:#111827;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
    font-family:Arial, Helvetica, sans-serif;
    color:white;
}

.container{
    text-align:center;
}

h1{
    margin-bottom:20px;
    color:#22c55e;
    font-size:40px;
    text-shadow:0 0 15px #22c55e;
}

.painel{
    width:400px;
    display:flex;
    justify-content:space-between;
    margin-bottom:15px;
}

.info{
    background:#1f2937;
    padding:10px 18px;
    border-radius:8px;
    font-size:18px;
}

.speed-control{
    display:flex;
    align-items:center;
    gap:8px;
}

.speed-control .speed-tag{
    font-size:14px;
    color:#9ca3af;
    width:50px;
    text-align:center;
}

#speedRange{
    width:180px;
    -webkit-appearance: none;
    appearance: none;
    height:8px;
    background: linear-gradient(90deg, #0f766e, #22c55e);
    border-radius: 6px;
    outline: none;
}

#speedLabel{
    margin-left:8px;
    font-size:14px;
    color:#cbd5e1;
}

/* Thumb styles */
#speedRange::-webkit-slider-thumb{
    -webkit-appearance:none;
    width:18px;
    height:18px;
    background:#0b1220;
    border:3px solid #22c55e;
    border-radius:50%;
    cursor:pointer;
    box-shadow:0 0 8px rgba(0,0,0,0.6);
}

#speedRange::-moz-range-thumb{
    width:18px;
    height:18px;
    background:#0b1220;
    border:3px solid #22c55e;
    border-radius:50%;
    cursor:pointer;
    box-shadow:0 0 8px rgba(0,0,0,0.6);
}

@media(max-width:500px){
    #speedRange{
        width:120px;
    }
    .speed-control{
        gap:6px;
    }
    .speed-control .speed-tag{
        font-size:12px;
        width:40px;
    }
    #speedLabel{
        font-size:12px;
    }
}

canvas{
    background:#000;
    border:4px solid #22c55e;
    box-shadow:0 0 20px #22c55e;
}

.botoes{
    margin-top:20px;
}

button{
    background:#22c55e;
    color:white;
    border:none;
    padding:12px 25px;
    border-radius:8px;
    cursor:pointer;
    font-size:18px;
    transition:.3s;
}

button:hover{
    background:#16a34a;
    transform:scale(1.05);
}

.texto{
    margin-top:15px;
    color:#d1d5db;
    font-size:15px;
}

@media(max-width:500px){

    canvas{
        width:320px;
        height:320px;
    }

    .painel{
        width:320px;
    }

}